Thermo Scientific 2860 User manual

Installation/Service Manual
Coliform Incubator Bath
Model 2860/2861 (251)
401 Millcreek Road, Box 649
Marietta,Ohio45750
USA
Phone:[phone]
TollFree:800-438-4851
FAX:[phone]
ManualP/N3177875
Rev.FDated06APR09
ENTER
On
Off
High Limit
Should Calib ration Be Required:
Press or until desire d temperature is displayed.
Display will then re turn to actual temperature.
Pre ss ENTER- New Set Point is accepte d.
To Se lect Temp e rature:
Selected Temperatures Are Factory Preset
Press ENTER- calibration is complete.
Pre ss or to ma tch readout to thermome ter.
Press Calibrate button.
Place certified / traceable thermometer into holder.
Allow to stab ilize.
Heater On
Calibrate
ST
ST

NOTICE
THE MATERIAL IN THIS MANUAL IS FOR INFORMATION PURPOSES ONLY. THE
CONTENTS AND THE PRODUCT IT DESCRIBES ARE SUBJECT TO CHANGE
WITHOUT NOTICE. THERMOSCIENTIFICMAKESNOREPRESENTATIONSOR
WARRANTIESWITHRESPECTTOTHISMANUAL. INNOEVENT SHALLTHERMOBE
LIABLEFORANYDAMAGES,DIRECTORINCIDENTAL,ARISINGOUTOFORRELATED
TOTHEUSEOFTHISMANUAL.
Forrepairinformationorreplacementpartsassistancefromthemanufacturer,callTechnicalServicesusingour
tollfreetelephonenumber.
800-438-4851
(FAX)740-373-4189
NOTE:
THE 230V UNITS DESCRIBED IN THIS MANUAL WERE DESIGNED SPECIFICALLY FOR
THE EUROPEAN MARKET AND ARE SUPPLIED WITH A EUROPEAN STYLE POWER
CORD. FOR DOMESTIC USE, A U.S. STYLE POWER CORD (P/N: 3176836) MUST BE
ORDEREDSEPARATELY.

INDEX DATE NOTES
REVISION STATUS
Initial releaseA
AMENDED PAGES
6/99
B
C
D
E
F
NOV01
APR05
JUN06
SEPT08
APR09
Add caution "acidic & caustic
substance....."
newmanuals#,manufacturelocation
consolidated with 3177691 230V,
removedCEsymbolanddeclaration
Revisedwaterspecifications
Added UL required info
5
36100110 (34001605)
ECR23443 & 23496
ECR24808
ECR25448/BA-670

Contents
INTRODUCTION.................................................................................................................. 1
UNPACKING AND DAMAGE.............................................................................................. 1
GENERAL INFORMATION ................................................................................................. 2
PERFORMANCE ................................................................................................................. 3
INSTALLATION ................................................................................................................... 3
EXPLANATION OF CONTROLS ........................................................................................ 4
OPERATION........................................................................................................................ 5
MAINTENANCE................................................................................................................... 6
TROUBLESHOOTING......................................................................................................... 7
REPLACEMENT PARTS LIST .......................................................................................... 10
ASSEMBLY & SCHEMATIC DWGS ................................................................................. 11
WARRANTY ...................................................................................................................... 15

1
1. INTRODUCTION
1.01 Yoursatisfactionandsafetyareimportant
toThermoandacompleteunderstandingofthis
unitisnecessarytoattaintheseobjectives.
1.02 Astheuserofthisapparatus,youhave
the responsibility to understand the proper
functionandoperationalcharacteristicsofyour
bath. This instruction manual should be
thoroughlyreadandalloperatorsgivenadequate
training before attempting to place this unit in
service. Awarenessofthestatedcautionsand
warnings,andcompliancewithrecommended
operating parameters -- together with
maintenancerequirements--areimportantfor
safeandsatisfactoryoperation. Theunitshould
beusedforitsintendedapplication;alterations
or modifications will VOID THE WARRANTY.
WARNING
Asaroutinelaboratoryprecaution,always
wearsafetyglasseswhenworkingwiththis
apparatus.
CAUTION
The benchtop must be rigid and strong
enough to comfortably support the weight
of the unit when filled with water.
1.03 Thisproductisnotintended,norcanitbe
used,asasterileorpatient connected device.
In addition, this apparatus is not designed for
useinClassI,IIorIIIlocationsasdefinedbythe
NationalElectricalCode.
2. UNPACKING AND DAMAGE
2.01 Saveallpackingmaterialuntilunitisput
into service. This merchandise was carefully
packedandthoroughlyinspectedbeforeleaving
our factory.
2.02 Responsibility for safe delivery was
assumedbythecarrieruponacceptanceofthe
shipment;therefore,claimsforlossordamage
sustained in transit must be made upon the
carrierbytherecipientasfollows:
1. Visible Loss or Damage: Note any
external evidence of loss or damage on the
freightbill,orexpressreceipt,andhaveitsigned
by the carrier's agent. Failure to adequately
describe such external evidence of loss or
damage may result in the carrier's refusing to
honoryourdamageclaim. Theformrequiredto
filesuchclaimwillbe suppliedbythe carrier.
2. Concealed Loss or Damage:
Concealed loss or damage means loss or
damagewhichdoesnotbecomeapparentuntil
the merchandise has been unpacked and
inspected. Shouldeitheroccur,makeawritten
requestforinspectionbycarrier'sagentwithin
fifteen(15)daysofthedeliverydate;thenfilea
claim with the carrier since the damage is the
carrier'sresponsibility.
2.03 If you follow the above instructions
carefully, we will guarantee our full support of
your claim to be compensated for loss or
concealeddamage.
DO NOT — FOR ANY REASON — RETURN
THIS UNIT WITHOUT FIRST OBTAINING
AUTHORIZATION. Inanycorrespondenceto
Thermo,please supply the nameplate data,
includingcatalognumberandserialnumber.

2
3. GENERAL INFORMATION
3.01 ThePrecisionColiformIncubatorBathis
aspecialpurposebathdesignedfortwospecific
tests.
1. Determinationoffecalcoliformcontentof
waterorsewage samples byincubation at
35.0o,41.5o,or44.5oCwithuniformityof
±0.2oC, as specified by the American
PublicHealthAssociation (APHA),Ameri-
can Water Works Association (AWWA),
andWaterPollutionControlFederation
(WPCF)in"Standard Methodsfor the
ExaminationofWaterandWastewater",
13thedition(1971),byeitherthemem-
branefiltermethods,MPNmethod,or
definedsubstratetechnology(DST).
2. DeterminationofE. coli contentoffood
samplesbyincubationat45.5oC,with
uniformityof + 0.2oC,asspecifiedby the
AOACin "OfficialMethods ofAnalysis of
the AOAC", 11th edition (1970)
3.02 The four user-selectable operating
temperatureshavebeenfactorypresetandare
precisely maintained by the microprocessor
controller.Thecentrifugalcirculatingpumpruns
at a constant speed as soon as the bath is
turned on. A safety hydraulic thermostat is
included as an over-temperature protection
device. CAUTION
TO AVOID BUILD-UP OF MINERAL
DEPOSITS AND TO PREVENT
CORROSION, USE ONLY DISTILLED
WATER IN THE BATH.
WARNING
USING CHLORINATED TAP WATER OR
ADDITIVES THAT CONTAIN CHLORINE
WILL VOID THE MANUFACTURER'S
WARRANTY. SIMILARLY, HIGH PURITY
(DEIONIZED) WATER THAT DOES NOT
FALL WITH IN RESISTIVITY RANGE OF
50K TO 1M OHM AND PH RANGE OF 7
TO9WILLALSOVOID THE WARRANTY.
CONTACT TECHNICAL SERVICES
WITH ANY QUESTIONS.
3.03 The proportional integral temperature
controlcoupledwithcirculationprovidedby the
centrifugal pump allows precise temperature
control, (factory precalibrated) when used in
conjunctionwiththesuppliedgablecover. The
gable cover helps the bath hold maximum
stabilityandreduceswaterlossbyevaporation.
CAUTION
AS WATER BATHS ARE OPERATED,
ESPECIALLY AT HIGHER TEMPERATURES,
CONDENSATION FORMS ON THE
UNDERSIDEOFTHEGABLECOVER.THE
AMOUNT OF CONDENSATION CAN BE
CONSIDERABLE. CARE SHOULD BE
EXERCISED WHEN REMOVING THE
COVER SO THAT WATER WILL FALL
BACK INTO THE BATH CHAMBER, AND
NOT ON THE BATH SURFACE. THE
COVER SHOULD BE PLACED UPSIDE
DOWN WHEN REMOVED TO MAINTAIN A
DRY WORK AREA.
Table 1. Listing of Models included in this Manual
Cat. No. Volts Watts Amps Hertz Max.
BTU/Hr Power Supply Board Fuse Mains Fuse
3166676 120 665 5.8 50/60 2268 N/A N/A
3166677 240 665 2.9 50/60 2268 FST-6.3x32-63mA FST-5x20-3.15A

3
3.04 Theinteriorofthebathisconstructedof
stainless steel and is designed for operation
with distilled water or water solutions, such as
water/ethyleneglycolwithacorrosioninhibitor
added.Thebodyismadefromgalvanizedsteel
andispaintedforaddedprotection. Astainless
steelgablecoverisalsoprovidedwiththebath.
3.05 The 230-volt units are identical in
appearancetothe120voltunits.
4. PERFORMANCE DATA
4.01 The following table identifies the
specificationsfortheColiformIncubatorBath.
TechnicalSpecifications
TemperatureSettings(factorypreset)
35 oC
41.5 oC
44.5 oC
45.5 oC
Sensitivity(coveron)
0.1oC
Uniformity(coveron)
± 0.2oC
ChamberSize
Length 14 inches (35 cm.)
Width 12 inches (30cm.)
Height 8 inches(20cm.)
Capacity (1.5"from top)-
4.8gallons(19.3L.)
5. INSTALLATION
WARNING
INSTALLATION SHOULD BE COMPLETED
ONLY BY QUALIFIED PERSONNEL.
5.01 Location-Themostuniformoperating
conditionswillbeobtained by placingthe bath
onalevelsurfaceinanarearemotefromdrafts,
ventilatingoutlets,radiators,and other rapidly
changingambientconditions.
Environmental Conditions-
Thisinstrumentisdesignedtooperatesafely
underthefollowingconditions:
• IndoorUseOnly
• Temperature: 5° to 40°C
• MaximumRelativeHumidity:80%for
temperaturesto22°C
• MaximumAltitude2000meters
Maximumperformanceisassuredacrossthe
followingtemperaturerange:
• 15ºC to 45ºC
5.02 Electrical Connections -
IMPORTANT
FOR PERSONAL SAFETY, THIS
APPARATUS MUST BE PROPERLY
GROUNDED.
1. The power cord provided on this unit is
equipped with a three-prong (grounding) plug
which mates with standard three-prong
grounding wall receptacle to minimize the
possibility of electric shock hazard from this
apparatus. Ifindoubttheusershouldhavethe
wallreceptacleandcircuitcheckedbyaqualified
electrician to make sure the receptacle can
provide adequate current and is properly
grounded.
2. Where a standard two-prong wall
receptacle is encountered, it is the personal
responsibilityandobligationoftheusertohave
itreplacedwithaproperlygroundedthree-prong
wall receptacle. Do not, under any
circumstances, cut or remove the third
(ground)prongfromthepowercord. Donot
useatwo-prongadapterplug.

4
5.03 Determinethetotalamountofcurrent
beingusedbyotherapparatusconnectedto
thecircuitthatwillbeusedforthisapparatus.
Itiscriticalthattheaddedcurrentdemand
(seenameplate)ofthisandotherequipment
usedon the samecircuitdoes notexceed the
ratingofthefuseorcircuitbreaker.
CAUTION
-BE SURE THAT THE POWER SUPPLY IS
OF THE SAME VOLTAGE AS THAT
SPECIFIED ON THE NAMEPLATE.
-BE SURE THAT THE WALL RECEP-
TACLE (MAINS DISCONNECT) IS
READILY IDENTIFIABLE AND EASILY
REACHED TO DISCONNECT THE UNIT
FROM THE POWER SOURCE.
6. EXPLANATIONOFCONTROLS
6.01 Power Switch - The power switch
locatedonthelowerleft-handsideofthe
controlpanelprovidespowerfortheentire
unit.Thepowerswitchcontrolsallelectric
powertothetemperaturecontrolandthe
pump. Thepumpstartswhenthepoweris
turnedonandrunsatafixedspeed.
6.02 Hi-Limit Thermostat - The highlimit
thermostatislocatedimmediatelytothe
rightofthepowerswitchonthelowerright
handcornerofthecontrolpanel.Thehigh
limitisanadjustablecontrolusedtoprevent
thermalrunawayintheeventthattheprimary
controlfails.
6.03 Control Panel - The Control Panel
providesa digitalreadoutof temperature
readings, heater "ON" indicator, andpro-
vides keys for user to make their desired
selections.
1. LED Display - Four digits are used to
displaytheactual,set,andcalibrated
valuesfortemperature.
2. Heater On Lamp - The "HEATER ON"
lampis illuminatedwhen power isapplied
totheheater.
3. Calibrate Key -Thiskeyputsthe unitin
calibrate mode to match a traceable
thermometertotheactualtemperature
display.
4. Temperature Selection Keys - These
keys are used to increase or decrease
thesetpointand/orcalibratetemperature
selections.
5. Enter Key - The enter key is used to
storeanewsetpointorcalibrationvalue.
Selected Temperatures Are Factory Preset
Off
On
High Limit
ENTER
Heater On
Calibrate
Press Calibrate button.
Allow to stab ilize.
Should Calib ration Be Required:
Press or until d esired tempe rature is displaye d.
Display will then return to actual temperature.
Press ENTER- New Set Point is accepted.
To Select Temperature:
Press ENTER - calib ration is complete.
Press or to match re adout to thermomete r.
Place certified / trace able thermometer into holder.
T
S
T
S
1
3
2
5
4
Figure 6.1 - Front Panel Controls

5
7. OPERATION
CAUTION
EXERCISE CARE WHEN USING ACIDIC OR
CAUSTIC SOLUTIONS AS THEY WILL ATTACK
THEGALVANIZEDSTEELBATHBODYIFSPILLED
INTOTHEBATH.IFSPILLSDOOCCUR,THEBATH
LIQUIDSHOULDBEIMMEDIATELYDRAINEDAND
THE UNIT THOROUGHLY FLUSHED. SPILLS AND
CONDENSATION SHOULD BE CLEANED/
REMOVED FROM ALL METAL SURFACES AFTER
EACH USE.
WARNING
EXPLOSION, IMPLOSION OR THE RELEASE OF
TOXIC OR FLAMMABLE GASES RISING FROM
MATERIAL BEING HEATED IS THE SOLE
RESPONSIBILITY OF THE USER.
7.01 Whenfillingthebathwithwater,allowance
must be made for the displacement of water
upon immersion of samples. The maximum
liquidlevelshould be1inchbelowthetopofthe
pan. Do not use deionized water.
7.02 Toconserveenergy,reduceevaporation
andincreasetemperaturecontrolaccuracy,use
thegablecoverprovided.Donotusealuminum
foilasacover;asitmaycausecorrosiondueto
anelectrochemicalreaction.
1. Add distilled water to bath. Position the
temperature probe tip 4 1/2" from the top
edge of pan. Adjust O-ring if necessary.
Probemustalwaysbeimmersedinthepan
duringoperation. Water levelshouldbe at
least1-1/2inchesabovethetoppumpoutlet
for adequate water circulation. The water
level should be approximately 1 to 1 1/2
inchesfromthetopofthebathwhenthebath
isfullyloaded.
2. Power up: Depress the power switch lo-
cated at the lower left hand corner of the
bath.Theunitisfullyoperationaluponappli-
cation of power and the display will read
actualbathtemperature.
3. ToSelecttheOperatingTemperature:
Model 2860 has four user selectable
temperature setpoints of 35.0, 41.5, 44.5
and45.5°C. Toselectthedesiredoperating
temperature,presstheVordownWbutton
until the desired temperature is displayed.
PressEnterbuttontoacceptthenewsetpoint.
Thedisplaywillflash,indicatingthatthenew
settinghasbeenentered. Whentheflashing
stops, the display returns to actual bath
temperature.
4. To Calibrate:
a. Calibrationshouldbeperformedtomatch
a stable bath's actual temp display to a
calibratedthermometer.
b. Press CALIBRATE button once. Display
flashes to indicate Calibrate mode.
c. Press Vor Wbutton until the display
matches the readout on a certified ther-
mometer.PressENTERtosetnewvalue.
d. IfENTERisnotpressed,thenewvaluewill
not be set and display will return to the
previouslydisplayedtemperature.
e. Displayshouldnowmatchyourcalibrated
thermometer. The unit will stabilize
automaticallytothesettemperature.
Periodic Safety Check
TesttheoperationoftheHi-Limitthermostat,as
follows,everythreemonths.
1. LocatetheHi-Limitthermostatadjustment
totherightofthepowerswitch.
2. Whendelivered,thethermostatadjustment
isturnedfullyclockwise.Inthisposition,
theHi-limitlightisOFF.
3. Afterthebathtemperaturehasstabilized,
useastandard,flatbladescrewdriverto
adjustthethermostat.
4. Turnthethermostatadjustmentcounter-
clockwiseuntiltheHi-limitlightisON.
5. Thenturnthethermostatadjustment
clockwise1/8ofaturnatatime, until the
Hi-limitlight goes OFF.
Atthissetting,if the bathtemp increases
abovetheselectedsetting,theHi-limit
activates.

6
8. MAINTENANCE
8.01 Cleaning and care of stainless steel:
Stainlesssteelwillresistcorrosion;however,itis
not impervious to it. For maximum life, stainless
steelmustreceiveacertainamountofcare.
CAUTION
AVOID SPILLING HARSH CHEMICALS
ONTOTHEBATH,ASCORROSIONOFTHE
STAINLESS STEEL MAY RESULT.
IMPORTANT
THEUSERHASTHERESPONSIBILITYFOR
CARRYING OUT APPROPRIATE DECON-
TAMINATION IF HAZARDOUS MATERIAL
IS SPILLED ON OR INSIDE THE BATH.
IMPORTANT
BEFORE USING ANY CLEANING OR DE-
CONTAMINATION METHOD OTHER THAN
THOSE RECOMMENDED BY THE
MANUFACTURER, USERS SHOULD
CHECK WITH THE MANUFACTURER
THATTHEPROPOSEDMETHODWILLNOT
DAMAGE THE EQUIPMENT.
1. There are many chemical cleaners, but
usuallyjustchangingthewaterandperiodic
cleaning with a non-scratching scouring
powder,suchasBonAmiwillsuffice.
Should algae or any other undesirable
microorganisms form on top of the bath
media, remove the diffuser pan, drain the
waterandcleanthebath.
CAUTION
ELECTROLYSIS CAN DAMAGE
STAINLESS STEEL. THIS CAN OCCUR IF
AN OBJECT IS ALLOWED TO REST
DIRECTLY ON THE SURFACE, TRAPPING
MOISTURE THAT BECOMES OXYGEN
STARVED BUT IS SURROUNDED BY
WATER CONTAINING OXYGEN.
RESULTINGELECTROLYTICACTIONWILL
PIT OR ERODE THE STAINLESS STEEL.
3. Should the stainless steel ever become
discolored by iron rust, use the following
procedure to remove all traces of the rust
andrestorethestainlesssteel.
WARNING
OBSERVE THE FOLLOWING SAFETY
PRECAUTIONS! USE HEAVY GLOVES OR
OTHER ADEQUATE HAND PROTECTION.
WEAR GOGGLES OR OTHER ADEQUATE
EYEPROTECTION.ONLYWORKINAREAS
WITH ADEQUATE VENTILATION.
Prepare a solution of 20% nitric and 1.5%
hydrochloricacid(if preferred,a 2% to5%
solutionofwarmoxalicacidmaybeused).
Swab solution over surface, allowing it to
remain until all rust is loosened. This will
usuallytake1to2minutes.
As soon as rust is loosened, immediately
flushwithcleanwateruntilallacidisremoved.
Drythoroughly.
4. During operation, condensation forms on
theinsideofthegablecover.Whenremoving
the gable cover, have one of its corners
centeredabovethewaterbath,sothatwater
runoffgoesintothebath.Shakingthecover
aidsthewaterrunoff.Besuretowipeupany
waterspillageonoraroundthebath.
2. Shoulditbenecessarytouseamediaother
thanwatersuchasthoselistedbelow,limit
thetimetoamaximumoffourhours.Clean
surfacesimmediatelyafteruse.
AluminumChloride BariumChloride
BichlorideofMercury CalciumChloride
CarbolicAcid ChlorinatedLime
CitricAcid(boiling) Dakin'sSolution
FerrousChloride Mercury Salts
LysolMercuricChloride Phenol
PotassiumPermanganate StannousChloride
SodiumHypochlorite TartaricAcid
PotassiumThiocyanate
CAUTION
Never use the following chemicals:
AquaRegia FerricChloride Iodine
SodiumAzide Sulfuric Acid

7
9. TROUBLESHOOTING
WARNING
SERVICE SHOULD BE PERFORMED BY A
QUALIFIED TECHNICIAN. BEFORE
REPLACING ANY ELECTRICAL OR
MECHANICAL COMPONENTS, UNPLUG
THE LINE CORD. IF ELECTRICAL POWER
IS REQUIRED FOR SERVICE, USE
EXTREME CARE.
9.01 RefertoTroubleshootingProceduresTable
(9.03through9.06)fortroubleshootinginformation
on the baths. This table provides the basic
informationrequiredtorepairthebath.
9.02 The following is a list of the tools and
instrumentsrequiredtoperformtheprocedures
outlined in the Troubleshooting Procedures
table.
ToolsNeeded:
• Phillipsor Flat HeadScrewdriver
• Ohmmeter
• DC Voltmeter
• ACVoltmeter
• 5VdcPowerSupply
Trouble Shooting Procedures
1. Verify that setpoint temp is greater than the actual
water temp.
Problem
9.03 No Heat
2. Verify that Hi Limit lamp is off. If light is on, turn
High Limit control fully clockwise.
3. Check temperature probe.
A. Disconnect unit from electrical supply.
B. Disconnect temperature probe connector
J302 from CPU board.
C. Apply a +5VDC to the temperature probe, +5 to
pin 1 of blue connector. Ground to pin 3 of blue
connector. The connector has these numbers
embedded on it.
D. Place a voltmeter between pins 2 & 3 on
temperature probe connector. Place the temp-
erature probe in a bath of known temperature.
Verify that the output voltage of the
temperature probe approximately
corresponds to the values in the table
below.
Degrees Centigrade vs. Output Voltage of Temperature Probe
Temp oC Volt Temp oC Volt
0 320mV 60 1.400V
10 500mV 70 1.580V
20 680mV 80 1.760V
30 860mV 90 1.940V
40 1.040V 99.9 2.218V
50 1.220V
E. If a 5V DC power supply is not available, leave J302
connected to the CPU board, turn power on and repeat
step D by placing the voltmeter probes on the backside of J302.
Procedure

8
6. Check CPU board
A. Disconnect temperature probe connector from J302 on
CPU board.
B. Turn power on.
C. Verify that potential across pins 1 & 3 of J302 reads 5 volts
with a voltmeter. If voltmeter does not read 5 volts, replace
CPU board.
9.04 Unstable temperature
control 1. Use gable cover provided to improve temperature control.
2. Verify that temperature setpoint is set at desired value.
3. If control is stable, but not at desired temperature, check
temperature calibration. Readjust if necessary.
4. Check temperature probe (See Paragraph 9.03, Step 3).
5. Check CPU board (See Paragraph 9.03, Step 6).
9.05 Too much heat. 1. Check temperature probe (see Paragraph 9.03, Step 3).
2. Check TRIAC (See Paragraph 9.03, step 5).
3. Check CPU Board (See Paragraph 9.03, Step 6).
5. Check TRIAC (Q2 on power supply board)
A. Turn power on.
B. Let bath stabilize to desired setpoint value.
C. Place an AC voltmeter between pins 1 & 5 on wire side of
connector J105 on power supply board. Voltmeter should
fluctuate between 0 volts and anything less than 5 volts.
D. If voltmeter does not show specified values in Step C,
replace power supply board.
9.03 No Heat 4. Check Heater
(Cont'd) A. Disconnect unit from electrical supply.
B. Disconnect heater from circuit and check resistance
between heater leads (red and white wires) with an
ohmmeter. Approximate heater resistance values are
shown below.
120V 230V
24ohms 47ohms
If resistance reads 0 or infinite, replace heater.
C. Check resistance between heater leads and ground (green
wire). If resistance reads 0 ohms, replace heater.
D. Check resistance between heater leads and outside case of
heater. If resistance reads less than 250K, replace heater.

9
* Calibration of the low and high end of the sensor input is done at the factory. Field calibration of the sensor may
be performed using the following technique: Enter the configuration routine and press the top left switch until a
little "c" (Item G) is displayed. Add water that is around 10oC to the bath completely covering the sensor. Insert a
calibrated thermometer. After the thermometer stabilizes, match the display setting to the thermometer reading
by pressing the up or down push-button switch. Press the top left switch. The readout will now display a big "C"
(Item H). Remove water from the bath and add hot water of about 70-80oC. After the unit stabilizes, match
readout display to temperature on thermometer. Press the top left switch. Calibration is now complete.
9.06 Pump does not 1. Verify that the water level is above both the pump inlet
circulate water. and outlet.
2. If pump is not running, verify that power is applied to the
bath. If power is present, check wiring of pump to power
switch. If wiring is correct, replace the pump.
9.07 Replace CPU or
Display/Keyboard
board
1. The software must be configured to match the Bath model. To
enter configuration mode, press the upper left push-button
switch while applying power. The upper left switch is labeled
"Calibrate." This switch is used to enter configuration
codes and steps through the different levels of
configurations.
Immediately following power up with the switch depressed,
the readout will display a 3-digit number. This is the software
revision. The readout will then begin to do a self-test of
digits. Press the "Calibrate" switch once. The readout will
display 0000. Follow the listing below to complete the
configuration.
DISPLAY ACTION
A. 0000 Enter 37 using up/down arrows. Press "Calibrate"
B. U 51 Enter 51 using up/down arrows. Press "Calibrate"
C. P 2.0 Enter 2.0 using up/down arrows. Press "Calibrate"
D. i400 Enter 400 using up/down arrows. Press "Calibrate"
E. t 8 Enter 8 using up/down arrows. Press "Calibrate"
F. 2668# None. DiagnosticDisplay. Press "Calibrate"
G. "Water Temp" *LOWTEMPCALIBRATION
LITTLE"c"FactorySetting. Press "Calibrate"
H. "Water Temp" *HITEMPCALIBRATION
BIG"C"FactorySetting. Press "Calibrate"
# This number corresponds to the temperature of the sensor. It will not necessarily be "2668",
but a four digit number.

10
10. REPLACEMENT PARTS LIST
SMALL COLIFORM BATH
3166676 3166677
Voltage 115V 230V
Stirrer Pump Assembly 3167049 3162149
Stirrer Pump Extension 3177458
Stirrer Pump Mounting Bracket 3164460
Bath Pan Kit 3167149
PCB Assembly, Power Supply 3166924
PCB Assembly, CPU 3167119
PCB Assembly, Display 3176679
Wire Harness 3177620 3173909
Temp. Probe Assembly (Plug w/Jack) 3167038
Probe/Thermometer Holder 3177444
Bath "O" Ring Kit 3167129
Heater Kit 3167160 3175478
Heater/Thermostat Bracket N/A 3174465
High Limit Thermostat 3175458
Hi Limit Light, Amber 3177575 3173907
On/Off Switch 3175318
Line Cord 3178034 319481
Diffuser Plate 3163799
Gable Cover 3166219
Power Supply Fuse (Mains) N/A 3172442
Power Cord Receptacle N/A 3179502
Power Supply Board Fuse N/A 3175930

11
Stir Pump
Assembly
Stir Pump
Extension
On/Off
Power Switch
Diffuser Plate
11. ASSEMBLY AND SCHEMATIC DRAWINGS
FRONT SECTION VIEW

12
120V UNIT BACK VIEW
Fiberglass
Insulation
Certified Traceable Thermometer
Holder(Thermometer not supplied)
Temp Sensor Assembly
Mounted/Installed Here
Stir Pump Knob
Main Line
Power Cord
Power Line to
Stir Pump
Temp Probe Jack
(Plug probe end into jack)
Stir Pump
Bracket

13
Fiberglass
Insulation
CertifiedTraceableThermometer
Holder(Thermometernotsupplied)
TempSensorAssembly
Mounted/InstalledHere
Stir Pump Knob
MainLine
PowerCord
Receptacle
PowerLineto
Stir Pump
TempProbeJack
(Plugprobeendintojack)
Stir Pump
Bracket
230V UNIT BACK VIEW

14
TOP VIEW
Temp.Sensor
AssemblyHolder
CertifiedTraceable
ThermometerHolder
(Thermometernotsupplied)
Stir Pump Assembly
Stir Pump
Bracket
Bath
Pan/Tub

15
ELECTRICAL DIAGRAM